D1 SPEC VSD-IV is the new revolution of VSDIII. VSDIV can increase the voltage up to 18V and its merit is the fact that consumers can adjust the output voltage from 15.8V to 18V which depend upon drivers’ request. Besides, VSDIV with LED voltage display device to let the customers see the condition of VSD at one glance.

The VSD-IV ignition amplifier incorporates both the CDI and transistor method ignition to provide optimum spark duration and maximum voltage output, resulting in crisper throttle response and a smoother engine power band.

The VSD-IV integrates Capacity Discharge Ignition (CDI) and transistor ignition technology to offer improved throttle response and smoother engine performance by providing optimal spark duration and maximum voltage output. The CDI technology provides maximum voltage by transferring all stored energy in the capacitor to the ignition coil so the ignition current can build quickly, making the VSD very effective at higher revs where a normal spark would diminish.

The strong, rapid spark prevents high rpm ignition miss that reduces peak power. The transistorized method generates high voltage by using transistors to cut off current to the coil, allowing a long energy discharge. This longer spark duration allows the Twin Power to improve lower RPM throttle response and torque. The Twin Power produces a spark output that is typically 1.5-2.5 stronger than a stock ignition system and consumes about 35% less power than other ignition amplifiers.



  • More spark energy & power
  • Quickens throttle response
  • Improves idle & starting
  • Increases Economy
  • Superior Performance
  • Fit: Turbo or Non-Turbo engines
  • Direct Ignition Engines
  • Direct Ignition Engines with Internal Igniters
  • Distributor Engines


*Price quoted before GST

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